Device for producing large-diameter plastic connecting flange

A technology for connecting flanges and production equipment, which is applied in the field of production equipment for large-diameter plastic connecting flanges. It can solve problems such as the depression of the connecting ring, reduce the sealing performance of the upper surface of the connecting ring, and affect the production quality of the connecting flange, so as to improve the sealing. performance, the effect of increasing the amount of material injected

Inactive Publication Date: 2013-03-13
JIANGSU JIANGTE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the inner surface of the upper cover is a smooth plane, in the production device of the large-diameter plastic connecting flange, when the large-diameter connecting flange is cooled after injection molding, due to the relatively large diameter of the connecting flange, the upper surface of the connecting ring will be depressed. , which seriously affects the production quality of the connecting flange, and greatly reduces the sealing performance of the upper surface of the connecting ring

Method used

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  • Device for producing large-diameter plastic connecting flange

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Embodiment Construction

[0007] Such as figure 1 As shown, a production device for a large-diameter plastic connecting flange, which includes a housing 1, a mold core 2 and an upper cover 3, the upper cover 3 is arranged on the housing 1, and a feeding hole is arranged in the middle of the upper cover 3 The injection hole 3.1, the mold core 2 is arranged on the inner bottom surface of the shell 1, a diversion groove 2.1 is provided on the upper surface of the mold core 2 corresponding to the injection hole 3.1, and a cooling water chamber 1.1 is provided in the shell 1; The feature is that the inner surface of the upper cover 3 is provided with several annular bosses 3.2, and the inner surface 3.3 of the upper cover 3 between two adjacent annular bosses 3.2 is concave arc.

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Abstract

The invention relates to a device for producing a large-diameter plastic connecting flange. The device comprises a shell, a mold core and an upper cover, wherein the upper cover is arranged on the shell; the middle of the upper cover is provided with an injection hole for feeding materials; the mold core is arranged on the bottom surface in the shell; a part on the upper surface of the mold core, corresponding to the injection hole, is provided with a flow guide groove; and a cooling water cavity is arranged in the shell. The shell is characterized in that the inner surface of the upper cover is provided with a plurality of annular bosses, wherein the inner surface of the upper cover between every two adjacent annular bosses is in the shape of a concave arc. The device has the advantages of ensuring the smoothness of the upper surface of a connecting ring of the connecting flange and improving the tightness of the upper surface of the connecting ring.

Description

technical field [0001] The invention relates to a production device for connecting flanges, in particular to a production device for large-diameter plastic connecting flanges. Background technique [0002] At present, large-diameter connecting flanges include connecting rings and connecting pipes. Large-diameter plastic connecting flanges are generally produced by injection molding. The production device of large-diameter plastic connecting flanges includes shells, mold cores, upper covers, and upper covers. Installed on the shell, there is an injection hole for feeding materials in the middle of the upper cover, the mold core is connected to the inner bottom surface of the shell, and a diversion groove is provided on the upper surface of the mold core corresponding to the injection hole, inside the shell Equipped with cooling water cavity. Since the inner surface of the upper cover is a smooth plane, in the production device of the large-diameter plastic connecting flange,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/26B29C45/73
Inventor 谭冬华
Owner JIANGSU JIANGTE TECH
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